How do you find the area of a circle when the radius is 6.2?

Mar 7, 2018

Substitute r = 6.2 into the equation for area of a circle.

Explanation:

The equation for area a circle is $A = \pi \cdot {r}^{2}$

Mar 7, 2018

$120.7628$

Explanation:

The general equation for any circle is $\pi {r}^{2}$ where $r$ is the radius.

Note ${r}^{2} = r \times r$

Hence here $r = 6.2$

$\implies \pi {r}^{2} = \pi \cdot {6.2}^{2}$

$\implies \pi \cdot 38.44$

$= 120.7628$ to 4 d.p